Interstitial fluid hydrostatic pressure (IFHP)

Definition

Interstitial fluid hydrostatic pressure is the force exerted by the fluid in the spaces between cells (interstitial space) against the walls of blood vessels. It plays a key role in determining the movement of fluids and substances between capillaries and interstitial spaces.

Related terms

Capillary hydrostatic pressure: The pressure within capillary vessels that drives fluid out of capillaries into the interstitial space.

Osmotic pressure: The pressure needed to prevent the flow of water across a semipermeable membrane, balancing hydrostatic pressures in capillary exchange.

Edema:

An accumulation of excess fluid in interstitial spaces, often resulting from imbalances in hydrostatic or osmotic pressures